tmux.conf

run-shell 'tmux setenv -g TMUX_VERSION $(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'

gray_light="#D8DEE9"
gray_medium="#ABB2BF"
gray_dark="#3B4252"
green_soft="#A3BE8C"
blue_muted="#81A1C1"
cyan_soft="#88C0D0"

set -g status-position top
set -g status-left-length 100
set -g status-style "fg=${gray_light},bg=default"
set -g status-left "#[fg=${green_soft},bold]\[#S\] #[fg=${gray_light},nobold]"
#set -g status-right "#[fg=${green_soft},bold]%d %b %R #H"
set -g status-right "#[fg=${green_soft},bold]#H CPU:#(cpu_percentage) MEM:#(mem_percentage)"
set -g window-status-current-format "#[fg=${cyan_soft},bold] #[underscore]#I:#W"
set -g window-status-format " #I:#W"
set -g message-style "fg=${gray_light},bg=${gray_dark},bold"
set -g mode-style "fg=${gray_dark},bg=${blue_muted}"
set -g pane-border-style "fg=${gray_dark}"
set -g pane-active-border-style "fg=${gray_medium}"
set -g window-status-activity-style fg=orange,none

set -g update-environment "DISPLAY WINDOWID XAUTHORITY SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION TERM"

unbind C-b
set -g prefix C-a
set -sg escape-time 1
#bind C-b send-prefix
bind a send-prefix

# start window numbering at 1
set -g base-index 1
setw -g pane-base-index 1
# renumber windows when one is closed
set -g renumber-windows on

# easier bindings to split a window
bind v split-window -h -c "#{pane_current_path}"
bind h split-window -v -c "#{pane_current_path}"
bind c new-window -c "#{pane_current_path}"

bind H resize-pane -L 5
bind J resize-pane -D 5
bind K resize-pane -U 5
bind L resize-pane -R 5


# enable vi keys
setw -g mode-keys vi
if-shell '[ "$(echo "$TMUX_VERSION > 2.1" | bc)" = 1 ]' " \
    bind -T copy-mode-vi v send-keys -X begin-selection; \
    bind -T copy-mode-vi y send-keys -X copy-selection-and-cancel; \
    bind -T copy-mode-vi C-v send-keys -X rectangle-toggle"

bind C-a last-window

# Sync panes (Send input to all panes in the window). When enabled, pane
# borders become red as an indication.
bind C-s if -F '#{pane_synchronized}' \
    'setw synchronize-panes off; \
    setw pane-active-border-style fg=${gray_medium}; \
    setw pane-border-format       " #P "' \
    'setw synchronize-panes on; \
    setw pane-active-border-style fg=red; \
    setw pane-border-format       " #P - Pane Synchronization ON "'

# save/restore buffer to clipboard
bind C-c run "tmux save-buffer - | xclip -i -sel clipboard"
bind C-v run "tmux set-buffer \"$(xclip -o -sel clipboard)\"; tmux paste-buffer"

# enable mouse
#set -g mouse on

# set 256 color terminal and also fix window name issue
set -g default-terminal "tmux-256color"
set -as terminal-features ',*256color:RGB'
# undercurl support
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'
# support colors for undercurl
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'

bind C-k clear-history

# increase scrollback buffer
set -g history-limit 50000

# set the status line colors
# set -g status-fg white
# set -g status-bg black

# if-shell '[ "$(echo "$TMUX_VERSION < 2.1" | bc)" = 1 ]' " \
#     setw -g window-status-fg cyan; \
#     setw -g window-status-attr dim; \
#     setw -g window-status-bg default; \
#     setw -g window-status-current-fg white; \
#     setw -g window-status-current-bg red; \
#     setw -g window-status-current-attr bright; \
#     set -g pane-border-fg green; \
#     set -g pane-border-bg black; \
#     set -g pane-active-border-fg yellow; \
#     set -g pane-active-border-bg yellow" " \
#     setw -g window-status-style fg=cyan,bg=red,dim; \
#     setw -g window-status-current-style fg=white,bg=red,bright; \
#     set -g pane-border-style fg=green,bg=black; \
#     set -g pane-active-border-style fg=yellow,bg=yellow"


# status line left side
# set -g status-left-length 40
# set -g status-left "#[bg=green]#[fg=black]Session: #S #[fg=red]W:#I #[fg=red]P:#P "

# status line right side
# set -g status-right "#[bg=green]#[fg=black]%d %b %R #H"

# status bar refresh time
set -g status-interval 2

# center the window list
set -g status-justify centre

# enable activity alerts
setw -g monitor-activity on
setw -g visual-activity on

set -g focus-events on

set -g allow-passthrough on

# chose-window within current session
bind '"' run-shell 'tmux choose-tree -Zwf"##{==:##{session_name},#{session_name}}"'

# toggle a floating shell with a tmux session named _popup_
bind -n M-f if-shell "[ '#{session_name}' = '_popup_' ]" { detach } { display-popup -w80% -h 80% -E "tmux new -A -s _popup_" }

#run ~/git/tmux-gruvbox/gruvbox-tpm.tmux
#set -g @tmux-gruvbox 'dark256'